Nice buy Mike, a 992 is essential to any serious collector.
Jerry is right your number is indeed from 1927 production. The "Serial Number Listings Preserved by John F. Gelson" is the only consistently reliable source for accuracy. All other lists were put together using guesswork whereas the Gelson Listings were compiled directly from the Hamilton Factory Ledgers.
By the way, your movement is housed in a period-correct after-market case. This may well be an original combination because through 1929 the 992 was available from Hamilton as a "movement only" to any of their authorized retail jewelers and distributors. After 1929 production the 992 and its successors 992-Elinvar (1930-40) and 992B (1940-70) were advertised only as factory cased movements.
Lindell
Posts: 10553 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002